Road shoulder maintainer



Pl 23, 1942 '.1. H. KERBR ROAD SHOULDER MAINTAINE'R Filed May 8, 1959 3 Sheets-Sheet l L@ Nw wm um R n O Ew Ii mw Vwm\\ww T nNn I V n U .5 m A w ww wm vm @um mw .Ow hv vm m w Om v @v m` Ow u f um M w @N J. imm m Nm W WNJU... r U 1 uw N 1l-MV1 Il mmi/l |l||. J||| |l|||| m|.mu w mm m VJ m I In w. f. n m l.. C. \.\|||..w| /Mm H I I. l Om. l r .x

April 28, J, H, KERBER ROAD SHOULDER MAINTAINER Filed May 8, 1959 3 Sheets-Sheet 2 'Uhr IQNVENTOR ATTORNEY April 28, 1942.

J. H. KERBER ROAD SHOULDER MAINTAINER Filed May 8, 1959 3 Sheets-Sheet 5 A ATTORNEY Patented Apr. 28, i942 ROAD SHOULDER MAINTAINER Joseph H. Kerber, Milwaukee, Wis., assigner to Hi-Way Service Corporation, Milwaukee, Wis., a corporation of Wisconsin Application May 8, 1939, Serial N o. 272,492

6 Claims.

The invention relates to road repair mechanism and more particularly to an arrangement for maintaining the shoulder of the highway.

In the use of concrete highways the loose material at the shoulder of the road becomes uneven due to the effects of weather and vehicular traiiic, and in order to bring this shoulder into a level or smooth condition adjacent the edge of the highway, I have provided an apparatus which with one implement brings the gravel from the shoulder to the concrete and spreads the gravel evenly over the shoulder, and then another implement scrapes the concrete clean. Thus by the use f a pair of angularly disposed blades the shoulder of the road is easily maintained.

A further object of the invention is to provide a pair of scraping blades, one of which may be raised and lowered by power means, and the other of which is yieldingly mounted on supporting means for the iirst named blade.

A further object of the invention is to provide a pair of scraping blades wherein one of the blades may be disposed at different angles in a horizontal plane relative to the roadway and the other blade is mounted on the supporting means for the first blade at a predetermined angle relative to the roadway.

In the drawings:

Fig. 1 is a side elevation view of apparatus embodying the invention;

Fig. 2 is a plan view thereof;

Fig. 3 is a detailed side elevation view of a part of the hoisting mechanism, parts being broken away and parts being shown in section;

Fig. 4 is a detailed sectional View taken on the line t--li of Fig. 2;

Fig. 5 is a detailed sectional view the line 5-5 of Fig. 4;

Fig. 6 is a detailed sectional view taken on the line 6 6 of Fig. 4;

Fig. 7 is a detailed sectional View the line 'I-l of Fig. 2;

Fig. 8 is a detailed sectional view the line 8 8 of Fig. 7;

Fig. 9 is a detailed sectional view the line 9 9 of Fig. 2;

Fig. 10 is a detailed perspective View of one of the holding brackets;

Fig. 1l is a diagrammatic view of the blades, showing their relation to the roadway;

Fig. 12 is a diagrammatic view of the front plow or scraper member;

Fig. 13 is a detailed horizontal sectional View taken on the line I3-l3 of Fig. 5;

taken on taken on taken on taken on Fig. 14 is a detailed front elevation view of the front plow and taken also in section along the line ld--M of Fig. 2;

Fig. 15 is a detailed vertical sectional View taken on the line l5-i5 of Fig. 14;

Fig. 16 is a detailed sectional view taken on the line Iii- I5 of Fig. 2.

Referring to the drawings, the numeral I5 designates generally a motor driven truck or tractor provided with the side bars or frame members It, and carrying an hydraulic pump il driven in any manner by the propelling mechanism of the truck, said pump having control valve mechanism associated therewith including the levers I8 controlling the hydraulic uid which is used in operating the hoisting mechanism hereinafter described.

Each side bar i6 has a frame bracket I9 mounted thereon to which a hoist carrying frame 2i) is secured by bolts 2l, said frame Z0 having a barrel or cylinder 22 secured thereto which is provided with a stuiiing box 23 at its upper end and which at its lower end receives the upper reduced end 2d of a cylindrical guide rod 25 which is secured at its lower end to a part of said frame 2i). A triangular supporting frame member 25 has apertured bosses 21 and 28 in its top and bottom ends, the top boss being slidably mounted on the cylinder 22 and the lower boss being slidably mounted on the rod 25. The upper end of the member 2&3 is secured by a bolt 29 to the lower end of a bar Sii whose upper angled end is clamped by a bolt 3l to the exposed end of the piston or ram 32 which works in the cylinder 22. The ram 322 is a double acting ram, pressure uid being introduced into the cylinder on opposite sides of said ram through the passages 22 and 22".

The lower end of the frame member 2li has a channel 33 formed in it, and in each instance this channel has a bar 34 welded to it.

As shown in Fig. 2, one of the bars 3i. has a bracket 35 lengthwise adjustably mounted on it while the other bar has a bracket 36 lengthwise adjustably mounted on it, and the part 33 for this bar also has a block 3i secured thereto.

The bracket 35 has a lengthwise extending slot in it to slidably receive the rod 3i, and it is clamped thereto by the two set screws 3% which pass through the top portion of said bracket and engage the top edge of the bar, said bracket provided with ears 35 which receive a pin 3s that passes through a portion of a vertically slotted block d in which the shank 4i of a hanger 42 is vertically slidably mounted and secured in adjusted position by set screws 43. l

The block 31 is similar to the block 40 and is pivotally carried by the supporting member 26 at this side of the vehicle, said member being provided with ears 26' which receive a pin 44 that passes through a portion of the vertically slotted block 31 in which the shank of a hanger 45 is vertically slidably mounted and secured in adjusted position by suitable set screws 45'.

Each of the hanger members 42 and 45 are provided with spaced ears 46. A pin 41 is vertically slidably and pivotally mounted in the ears 46 of the hanger 45 while a similar pin 48 is vertically slidably mounted in the ears of a link 49 which is pivotally connected by a pin 5|) to the ears 46 of the member 42. A scraper blade is -bolted or otherwise suitably detachably secured to a blade frame member 5| which has oppositely extending flanges 52 and 53 at its top and bottom, The pins 41 and 48 each have flanged bases 54- which are secured by bolts 55 to the base ange 53. A bracket 56 adjustably connects the upper end of each pin 41 or 48 with the top flange 52 of the member 5|', each bracket having an aperture 51 to receive the reduced end of either the pin 41 or 46 and provided with spaced sets of bolt holes 58 into either set of which the bolts 59 may be placed to connect said bracket with the flange 52. The two sets of holes 58 in the bracket 56 permit of a limited vertical angular adjustrnent of the blade and its frame relative to its hangers, the adjustment being indicated by the dotted lines in Fig. 9.

With the blade 5| mounted as above described it is yieldingly held against the roadway by sets of springs 60 connecting each bracket 56 with the adjacent hanger or link, said springs permitting the blade to shift vertically with the pins 41 or 48 sliding vertically in their hangers.

The bracket 36 has a lengthwise extending slot in which one of the bars 34 is slidably mounted and secured in adjusted position by means of set screws 6 is provided with spaced holes 62 and on its opposite side witha set of centrally located apertured ears 53 and with arms G4 having apertured ears 65 at the ends thereof, the apertures 63 being laterally offset relative to the ears 65. A hanger 65 is formed of a round bar having a block 66' interposed between one end and a cap 61 welded to said rod, said block 66 and cap 61 being apertured to receive a pin 68 which is mounted in its ends in the ears 63, the cap apertures 61 being larger than the pin 68 so that the hanger 65 may tilt relative to the bracket 35. The hanger 66 is held in a lengthwise position relative to the bracket 36 by a pin 69 inserted in the ears 65 of the forwardly disposed arm 64.

The bent end of the hanger 66 has its end tting in the socket of a member 1|' so that it may turn therein. The member 1| has oppositely disposed lugs 12 at its lower end which engage in eye ttings 13 secured by bolts 14 to a scraper blade 15, see Figs. 4, 5, and 13. The iittings 13 have extensions 16 to which a collar 11 surrounding the hanger E6 is clamped by a bolt 18, the hanger having a stop lug 66 welded thereon and disposed adjacent said collar to prevent lengthwise movement of said hanger relative to the blade although permitting a limited turning movement of said hanger relative to the collar and the blade or mold board 15. Referring to Fig. 14, the inner end of the blade 15 is lengthwise adjustably secured by bolts 19 to a rIhis bracket on one side bar 88 which has end 8| loosely pivotally connected by a pivot pin 82 to lugs 83 projecting from the inner side of the bracket 35. With the above described arrangement the blade 15 is held in operative position, it being noted that the loose pivot pin connection 82 at one end and the pivotal connection of the hanger 66 relative to the blade and the fact that said hanger 66 can tilt relative to the bracket 36 permits the blade 15 to be vertically tilted if desired.

For bracing the means above described for hanging the blade 15 in operative position, a brace bar 84 is provided with bent ends, one of which is to engage in one of the series of holes 62 in the bracket 36, and the other engages in the eyed lug 85 formed as a part of the member 26 on the opposite side of the vehicle.

With the above described construction the blade 15 may be raised or lowered by raising or lowering the brackets 26 and the bars 34 and the brackets 35 and 36 connected therewith, and one side may be raised somewhat higher than the other to give the blade a vertical tilt as shown by the dotted lines in Fig. l2, and under these conditions the connections between the blade and its hanger brackets are suiciently loose to allow of this angular disposition of the blade.

The blade may also be set at diierent angular positions in a substantially horizontal plane relatively to the roadway, and for this purpose the lengthwise adjustment of the bracket 36 on its supporting bar 34 so as to bring the bar 84 into position for interlocking engagement with one of three holes 62 will give three angular adjustments, one of which is shown in full and the others of which are indicated by the lotted lines in Fig. 1l, the blade 15 being swung about the pivot pin 82 although it will be noted that this pin 82 may also be adjusted relatively to the bar 34 on this side of the vehicle by the adjustment of the bracket 35 relative to said rod.

The blade 5| is normally mounted at a substantially i'ixed angle relative to the road and to the blade 15, and due to its yielding connection with its hangers it always stays in contact with the ground regardless of the raised or lowered condition of the blade 1.5, and its position is indicated in Fig. 11.

With the above construction as the truck equipped with the invention proceeds along the surfaced highway 86 in the direction Of the arrow 81 with its wheels l5' straddling the edge 88 of said highway, the material adjacent the edge of the road is engaged by the scraper or cutting blade 15 and worked in toward said edge, and any of this material which overflows onto the surfaced highway is scraped off by the yieldably mounted blade 5|. Thus the ll at the side of the nished highway is smoothed and levelled olf so that deep ruts or holes are prevented from forming therein. Both blades may be raised on the ground if desired by a suiciently high raising of the brackets 26.

It is to be noted that the hoisting mechanism at each side of the vehicle is a separate unit and that it has separate supply pipes I1 leading to the pumping apparatus i1 which may, for eX- ample, be like that of my application for United States Patent Serial N0. 128,338, filed March 1, 1937, in which case each lever I8 acts to control a suitable valve controlling one of these sets of pipes I1'. Thus each end of the mold board or blade 15 may be raised or lowered independently of the other. It is also to be noted that the application of the hydraulic pressure on the piston of the hydraulic hoisting mechanism therein will act to produce a downward pressure on the blade l5 to cause it to exert a cutting action on the road metal if desired.

I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claims.

What I claim as my invention is:

1. In a road treating apparatus of the character described, the combination of a hauling vehicle, a front scraper member mounted on said vehicle for working over the surface forming the shoulder of the road and scraping road material toward the edge of the surfaced road, means for supporting said member at varying elevations, a second scraper blade yieldingly mounted relative to the roadway and carried by said supporting means to scrape material from the surfaced road back to the shoulder at the edge thereof and spread said material evenly over said shoulder, said blades being vertically and pivotally mounted relative to each otherI and said supporting means being adapted to hold said blades at various angles to each other in Ia horizontal plane.

2. In a road treating apparatus of the character described, the combination with a motor driven vehicle having a frame, of a mold board, a pair 0f supporting units for said mold board mounted on said frame, each of said units including a hydraulic hoist having a piston, a carrying frame connected to said piston and including a bar, a bracket mounted on said bar and operative connections between said brackets and said mold board, and a scraper blade yieldingly mounted on said supporting units and disposed at an angle to said mold board.

3. In a road treating apparatus of the character described, the combination with a motor driven vehicle having a frame, of a mold board, a pair of supporting units for said mold board mounted on said frame, each of said units including a hydraulic hoist having a piston and a carrying frame connected to said piston, means for connecting said carrying frames together, brackets hingedly mounted on said carrying frames for limited Vertical pivotal movement relative to said frames, hangers vertically adjustably mounted in said brackets, a scraper blade vertically slidably mounted relative to said hangers, and spring means interposed between the blade and its hangers for exerting a downward yielding pressure on said blade, said blade being disposed at an angle to said mold board.

4. In a road treating apparatus of the character described, the combination of a hauling vehicle, vertically adjustable supports mounted on said vehicle Iand including a pair of spaced brackets, a scraper member hung from said brackets and extending at an angle to the roadway tc deflect material oir" the roadway, a second scraper blade pivot-ally connected at one end to one of said brackets, and bracket means associated with the support for the other of said brackets and operatively connected to the intermediate part of said second blade, said second named blade arranged to deect material toward the roadway.

5. In a road treating apparatus of the character described, the combination of a hauling vehicle, vertically adjustable supports mounted on said Vehicle and including :a pair of spaced brackets, a scraper member hung from said brackets and extending at an angle to the roadway to deflect material off the roadway, a second scraper blade pivotally connected at one end to one of said brackets, and bracket means adjustably mounted on the support for the other of said brackets and operatively connected to the intermediate part of said second blade to support the same at diierent angles in -a horizontal plane relative to the roadway to deflect the material toward the roadway.

6. In a road treating apparatus of the character described, the combination of a hauling vehicle, vertically adjustable supports mounted on said vehicle and including a pair of spaced brackets, a scraper member hung from said brackets and extending at an angle to the road- Way to deect material 01T the roadway, a second scraper blade pivotally connected at one end to one of said brackets, bracket means adjustably mounted on the support for the other of said brackets and operatively connected to the intermediate part of said second blade to support the same at diierent angles in a horizontal plane relative to the roadway to deiiect material toward the roadway, and means adjustably connecting said bracket means with the support for the bracket to which said second blade is pivotally connected to brace said supports in different angular positions of said second blade.

JOSEPH H. KERBER. 

